had an issue this weekend when I would put my 24v in neutral from time to time the engine would idle at 1280, sometimes it would slowly come back down to 890 but a few times I had to turn off the engine and restart to get the idle to reset. I was able to get the idle to come down by engaging it into gear but dont like to do that to the tranny. Anyone experienced this? I recently installed Stargazer, but perfect pass says its not related to their system. I also put on a small prop as an experiment 13.17 x 17 could that have anything to do with it?

I found maybe 1/16" of play, maybe less. I bet that is the issue i would assume there should be no play. I will lube up the spring as well that woudl explain the slow movment back to a low idle sometimes.

I have a similar issue with my '07 Malibu.. I posted a while back and got no responses... When it happens if I am idling forward, I can bump the throttle a little more forward and return it back and if will settle back down, or if I am in neutral, I can pull the button and rev the engine a second and it will settle down.... Can you post the fix for the Supra, or send it to me in an email so that I can check and see if it works on mine too (I am throttle by wire as well)

Billy, I have sent the info to you but I don't think it applies to your boat (I could be wrong). In 2006 the Supra's had a cable running from the shifter to engine compartment and in the engine compartment they had a throttlemate to convert the mechanical input from the shifter/throttle to an electronic signal going to the engine. The problem was in the throttlemate. I believe in 2007 they switched to a full throttle by wire system and eliminated the throttlemate.